tests: Add fuzzing harnesses for classes/functions in policy/fees.h, checkqueue.h and cuckoocache.h. Add fuzzing coverage.
Summary:
Add fuzzing harness for FeeFilterRounder
Add fuzzing harness for classes/functions in checkqueue.h
Add fuzzing harness for classes/functions in cuckoocache.h
Add coverage of {,Incremental}DynamicUsage(const std::set<X, Y>&s) to existing fuzzer
Add coverage of GetVirtualTransactionSize(...) to existing fuzzer
Add fuzzing harness for AdditionOverflow(...)Backport of core PR18565.
Our cuckoocache requires a class as key since D4643.
Test Plan:
ninja bitcoin-fuzzers ./test/fuzz/test_runner.py <path_to_corpus>
Reviewers: #bitcoin_abc, majcosta
Reviewed By: #bitcoin_abc, majcosta
Differential Revision: https://reviews.bitcoinabc.org/D8987